23
23
HCD-GB3
HCD-GB3
7-2. BLOCK DIAGRAM — TUNER SECTION —
: TUNER(FM)
: TUNER(AM)
• Signal Path
FM/AM
ANTENNA
L851
D851
L852
AM OSC
L804
FM RF
D802
D803
VT
L805
FM OSC
CF802
10.7MHz
10.7MHz
CF801
L803
X801
75kHz
TU-DO
TU-DI
TU-CE
TU-CLK
TU-ANSD
TUNER
R-CH
R-CH
TUNER
L-CH
L-CH
CNP802
3
1
FM FREQUENCY
COVERAGE
AM FREQUENCY
COVERAGE
AM TRACKING
FM DETECTOR
FM TRACKING
CF803
450kHz
TU-DI
TU-CE
TU-DO
TU-ANSD
VM+9V
VM9V
VM9V
+3V
+5V
TU-CLK
L806
Q801
Q802
+3V
REG
+5V
REG
Q803
FM MIX
AMP
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299